Rails Thin服务器未找到PID

Question

我正在使用Nginx Web服务器和5个Thin应用服务器在Ubuntu上运行Rails。

每天系统会变得非常缓慢，有时会挂起。

我不确定是Thin服务器出了问题，但是当它挂起时，停止服务器会收到以下错误提示：

Can't stop process, no PID found in tmp/pids/thin.3000.pid

这里是显示Thin启动和停止的日志：

bitnami@linux:/opt/bitnami$ thin -C projects/myapp/current/config/thin.yml start
Starting server on 127.0.0.1:3000 ...
Starting server on 127.0.0.1:3001 ...
Starting server on 127.0.0.1:3002 ...
Starting server on 127.0.0.1:3003 ...
Starting server on 127.0.0.1:3004 ...


bitnami@linux:/opt/bitnami$ thin -C projects/myapp/current/config/thin.yml stop
Stopping server on 127.0.0.1:3000 ...
Sending QUIT signal to process 21921 ...
>> Exiting!
Timeout!
Can't stop process, no PID found in tmp/pids/thin.3000.pid
Stopping server on 127.0.0.1:3001 ...
Sending QUIT signal to process 21945 ...
>> Exiting!
Timeout!
Can't stop process, no PID found in tmp/pids/thin.3001.pid
Stopping server on 127.0.0.1:3002 ...
Sending QUIT signal to process 21969 ...
>> Exiting!
Timeout!
Can't stop process, no PID found in tmp/pids/thin.3002.pid
Stopping server on 127.0.0.1:3003 ...
Sending QUIT signal to process 21993 ...
Timeout!
Sending KILL signal to process 21993 ...
Stopping server on 127.0.0.1:3004 ...
Sending QUIT signal to process 22017 ...
>> Exiting!
bitnami@linux:/opt/bitnami$

有时候它会找到PIDS，有时候又找不到。这是什么意思呢？

谢谢！

- Reddirt

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启动服务器后，您是否查看了 tmp/pids 目录以查看文件是否正在被创建？如果是，它们是否包含正确的进程 ID？ - ipd

是的，它们在启动时被创建。 - Reddirt

Answer 1

我有完全相同的烦人问题。

我发现如果服务器在启动时崩溃，pid文件会被创建，但文件中没有pid。尝试查看服务器./logs/thin.3001.log的日志文件并查找错误。您也可以尝试通过手动启动服务器来解决问题。

rails s -p 3000

并查看是否有任何错误被抛出。

祝好运

Chris

- Chris McCauley

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你的指导非常有帮助。我在启动thin时tail了thin.log，很快就找到了问题。谢谢！ - William Notowidagdo

@WilliamNotowidagdo 很高兴能帮忙！ - Chris McCauley